Bidding for purchase of ready-mixed concrete construction materials with compressive strength at 28 days (kg. sq.cm.) in cube shape 15 x 15 x 15 cm. and cylindrical shape 15 x 30 cm., cube shape 210 kg. sq.cm. and cylindrical shape 180 kg. sq.cm., 1 item, water management work for the Ban Khao Yang Weir Project (Phase 1), Ban Phae Subdistrict, Ku Mueang District, Buriram Province (SJC.17) by electronic bidding (e-bidding) (Project Number: 67119127113)